I have just started using a used 722k reciever. Everything is working perfectily except that even though all the diagnostics say my ethernet connection is working, my dish cinema and dish platinum menues say that there are no titles. I have reset a few times and the reciever is in the DMZ on my router. Dish online can edit my dvr ok and I can view movies and tv on my computer fine. This has me stumped and advice would be appreciated